Tired of cranking your trailer jack by hand — especially on heavier loads or in the cold? Trailer Gearbox is now available to order online at RODOC: American-made, drill-powered gearboxes that bolt onto your existing trailer jack and let a cordless drill do the lifting. Three models are in stock and ready to ship.
What Is a Trailer Gearbox (And Why Fleets Are Switching)
A trailer gearbox is a compact gear-reduction unit that mounts to your trailer's jack and connects to a standard cordless drill. Instead of hand-cranking a stand jack up and down — slow, hard on your back, and rough on your hands in freezing weather — you squeeze a trigger and the gearbox does the work. For fleets, that means faster hookups, less driver fatigue, and one gearbox that can move between multiple trailers in seconds thanks to Trailer Gearbox's universal bracket system.
New In Stock: 3 Trailer Gearbox Models
Supermax Gearbox — Single Speed Drill-Powered Trailer Jack
Built for heavier trailers that need serious lifting power. The Supermax runs a 14:1 gear reduction through multi-stage spur gears for strong, efficient lifts on demanding setups.
- Tongue weight lift capacity: 10,000 lb
- Gear ratio: 14:1
- High-strength steel and billet aluminum construction with an anodized finish
- Fits standard 4" trailer jacks (Supermax bracket family adapts to other jack styles)
- 5-year manufacturer warranty
Price: $399.99 — Shop the Supermax Single Speed Gearbox
Multi-Mount Gearbox — Single Speed Drill-Powered Trailer Jack
The everyday workhorse. An 11:1 gear reduction delivers a balanced mix of power and speed, and the Multi-Mount bracket system makes it easy to carry one gearbox and swap it across multiple trailers in your fleet.
- Tongue weight lift capacity: 8,000 lb
- Gear ratio: 11:1
- Fits standard 4" trailer jacks (Multi-Mount bracket family adapts to other jack styles)
- Compatible with Eby, Moritz, PJ, Stealth, Sure-Trac, Thunder Creek, United, and Wilson trailers
- Made in the USA · 5-year manufacturer warranty
Price: $349.99 — Shop the Multi-Mount Single Speed Gearbox
Multi-Mount Gearbox — Dual Speed Drill-Powered Trailer Jack
Same Multi-Mount platform, with a second gear for speed. A 3:1 high-speed mode rips through quick retraction, and an 11:1 low-speed mode takes over for controlled, high-torque lifting — one gearbox, two modes.
- Tongue weight lift capacity: 8,000 lb
- Gear ratio: 11:1 low / 3:1 high
- Fits standard 4" trailer jacks (Multi-Mount bracket family adapts to other jack styles)
- Compatible with Moritz, PJ, Stealth, Sure-Trac, United, and Wilson trailers
- Made in the USA · 5-year manufacturer warranty
Price: $374.99 — Shop the Multi-Mount Dual Speed Gearbox
Which Gearbox Should You Buy?
| Model | Best for | Lift capacity | Gear ratio | Price |
|---|---|---|---|---|
| Supermax Single Speed | Heavier trailers, max lifting power | 10,000 lb | 14:1 | $399.99 |
| Multi-Mount Single Speed | Everyday use across multiple trailers | 8,000 lb | 11:1 | $349.99 |
| Multi-Mount Dual Speed | Drivers who want speed and torque in one unit | 8,000 lb | 11:1 / 3:1 | $374.99 |
All three run on a standard cordless drill and use Trailer Gearbox's universal mounting system, so the same gearbox can move from trailer to trailer with the right bracket. Not sure which bracket you need? Give our parts team a call before you order — jack size and bracket compatibility make all the difference in getting a clean fit.
Why It's Worth the Upgrade
- Faster hookups — seconds instead of minutes of hand-cranking
- Less driver fatigue and injury risk, especially in cold weather or on loaded trailers
- Fleet-friendly — one gearbox, multiple trailers, thanks to the universal bracket system
- Built to last — high-strength steel and billet aluminum with an anodized finish, backed by a 5-year warranty
Ready to stop cranking? Browse the full Trailer Gearbox lineup at RODOC and get yours shipped out today.